MacBook Pro charger and fast charging: which one you need

The adapter in the box depends on the model. On the 14-inch MacBook Pro it is 70W or 96W, and on the 16-inch it is 140W. Apple's tech specs pages list them like this, and they are worth reading before you buy, because the fast-charging claim needs a higher wattage than some of the 14-inch models ship with.

Fast charging, in Apple's words, gets the battery to about half in 30 minutes. For the 14-inch models the tech specs say "fast-charge capable with 96W or higher USB PD power source"; for the 16-inch, 140W or higher, which is what comes in that box. So the short answer: a 16-inch already has the adapter it needs, and a 14-inch with a 70W adapter needs a bigger one to fast-charge. The rest of this post sorts out which Mac gets which adapter, and when the bigger one is worth having.

The adapter in the box

Apple's tech specs page also says the 96W adapter can be configured with the M5 Pro with the 15-core CPU, so if you are ordering one and want the faster charge from day one, choose it at checkout. For the M6, the specs page lists only the 70W adapter and says fast charging needs a 96W or higher USB PD power source, so the quickest top-up there means a second, bigger adapter. Apple's M6 announcement names the 96W Power Adapter as an example of a compatible one.

The OLED models are covered separately in the OLED MacBook Pro battery post.

What 70W means in practice

A lower wattage is not a problem for light work. Apple's tech specs give a minimum recommended wattage to charge: 60W for the M6, and 70W for the 14-inch M5 Pro and M5 Max. So the 70W adapter clears the bar on the M6 with room to spare, and on an ordinary day it keeps the battery topped up while you work.

A 96W adapter earns its place in two cases: when you want the quick lunchtime charge, and when the Mac is doing heavy work while it charges. Apple hasn't said how a 70W adapter copes with sustained heavy work, so if that is your day, the larger adapter is the safer choice.

MagSafe 3 or USB-C

Each of these models has two ways to charge:

• MagSafe 3. Apple includes a USB-C to MagSafe 3 cable, 2 meters long, with each of these models. The connector is held on by magnets, so a tug on the cable should pop it off rather than drag the Mac off the desk.
• USB-C. Apple's pages say these Macs support charging through a USB-C power adapter or other USB PD power source, and the Thunderbolt ports support charging. That is handy when one cable has to do everything, and it is what you use when the MagSafe cable is in a bag you left at home.

The wattage rule applies to both. Whatever you plug in, the fast-charge claim names a higher-wattage adapter, and Apple's pages give a minimum recommended wattage for charging at all. Most phone chargers sit well below it. Use an adapter rated at least as high as the one in the box.

Travel tips

• A second adapter for the bag. If you have a desk setup and a bag, a second adapter saves you carrying one back and forth. Match or beat the wattage in the box.
• Keep the MagSafe cable for the desk and a USB-C cable for the bag, if your adapter has a USB-C port. It gives you a backup.
• Top up when you can. Fast charging is the fast part of the curve. Charging usually slows as a battery fills, so 30 minutes in a meeting gets you much further than 30 minutes at the end of a long charge.
• A power bank must be capable. Anything that supplies power to a MacBook Pro needs to be USB PD and rated for enough wattage. Check the label rather than guessing.
• Keep it cool. A hot bag or a car in the sun is rough on any battery.

For how long each model lasts between charges, and what Apple's battery ratings do and don't tell you, see MacBook Pro M6 battery life.

Which adapter should you buy

Decide by the work you do, not the wattage:

• Email, documents, calls, a browser. The 70W adapter in the M6 box is enough, and an extra one for the bag is optional.
• Photo and video work, development, and many external displays. Take the 96W adapter, or the 140W one that comes with the 16-inch.
• You mostly charge overnight. Any of them. Fast charging matters for the times you can't.

Common questions

Can you charge a MacBook Pro with another brand's charger?

Apple's pages say these Macs support charging through a USB-C power adapter or other USB PD power source. So a USB PD charger with enough wattage works. The one to avoid is a charger with a lower rating than the Mac asks for, which will charge slowly or may not keep up while you work.

Does fast charging hurt the battery?

Apple hasn't said that fast charging harms these batteries, and it lists the feature as a built-in capability. Heat is the thing to avoid, so charge on a hard, flat surface rather than under a blanket or a pile of papers. For settings that look after the battery at any charge speed, see the OLED battery post linked above: the steps in System Settings > Battery are the same on these Macs.

Which port should you use?

Any of the Thunderbolt ports or the MagSafe 3 port. Apple's tech specs list MagSafe 3 and USB-C charging for both sizes. MagSafe leaves all three Thunderbolt ports open for drives and displays, which is its quiet advantage at a desk.

Do you need a bigger adapter than the one in the box?

Only if you want the fast-charge claim on an M6 or the 70W M5 Pro, or if you do heavy work while plugged in. Otherwise the box adapter is the one Apple chose for that Mac.

Where Notchpals fits

Notchpals won't tell you which adapter to carry, but it will tell you when you need one. Its characters peek from the notch on the mini-LED MacBook Pros, and one of its areas, Tech care, keeps an eye on the battery. Below 20 percent and not charging, a Tech care character in your crew, such as Gumdrop the gumball robot, comes down from the notch. Plug in after that and you get one more line.

GumdropThe laptop is snacking on electricity now. Good job, you.

It knows only the battery level and whether the Mac is charging, never which adapter or what wattage. On the day the 96W adapter stays at home, that early warning is what buys you time to find any charger at all.